Nevermind!
The problem appears to have been in the table.
I created a new field (longtext), copied the data from the old field to it, and it all displayed fine.
So I deleted the old field and renamed the new field and it appears to be working.
So it must have been some embedded parameter in the old field. I think that field was originally just a text field and I changed it. It must have kept a parameter from the original.